athena/activity/public/activity_manager.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef ATHENA_ACTIVITY_PUBLIC_ACTIVITY_MANAGER_H_
   6 #define ATHENA_ACTIVITY_PUBLIC_ACTIVITY_MANAGER_H_
   7
   8 #include "athena/athena_export.h"
   9
  10 namespace athena {
  11
  12 class Activity;
  13 class ActivityManagerObserver;
  14
  15 // Manages a set of activities.
  16 class ATHENA_EXPORT ActivityManager {
  17  public:
  18   static ActivityManager* Create();
  19   static ActivityManager* Get();
  20   static void Shutdown();
  21
  22   virtual ~ActivityManager() {}
  23
  24   // Adds/Removes an activity. ActivityManager owns the activities.
  25   virtual void AddActivity(Activity* activity) = 0;
  26   virtual void RemoveActivity(Activity* activity) = 0;
  27
  28   // Updates the UI when the task color/title changes.
  29   virtual void UpdateActivity(Activity* activity) = 0;
  30
  31   virtual void AddObserver(ActivityManagerObserver* observer) = 0;
  32   virtual void RemoveObserver(ActivityManagerObserver* observer) = 0;
  33 };
  34
  35 }  // namespace athena
  36
  37 #endif  // ATHENA_ACTIVITY_PUBLIC_ACTIVITY_MANAGER_H_